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Gaceta Sanitaria

Print version ISSN 0213-9111


RODRIGO VAL, María Pilar et al. Descriptive epidemiology of non-meningococcal bacterial meningitis in the province of Saragossa [Spain] from 1999 to 2004: Evaluation of the Epidemiological Surveillance System. Gac Sanit [online]. 2007, vol.21, n.5, pp.390-396. ISSN 0213-9111.

Objectives: To describe non-meningococcal bacterial meningitis (nMM) and to evaluate the Epidemiological Surveillance System (ESS) in the province of Saragossa (Spain) between 1999 and 2004. Methods: Information was obtained from the register of diseases subject to mandatory reporting and the Minimum Basic Data Set (MBDS). The ESS was evaluated by using the Centers for Disease Control and Prevention (CDC) criteria and by estimating the completeness of the system through the capture-recapture technique. Results: 111 cases of nMM were notified (62.2% in males) and the mean age was 40.7 years. The largest proportion of cases (16.5%) occurred in children under 2 years of age. The clinical presentation was meningitis in 81.1%. Diagnosis was through bacterial culture in 70.3%. Streptococcus sp. was found in 54% (82% due to S. pneumoniae), enterobacteria in 5.4%, Listeria and Staphylococcus in 4.5%, Pseudomonas aeruginosa in 1.8%, and Haemophilus influenzae in 0.9%. The incidence rate per 100,000 inhabitants was 1.6 in 2004 and 2.6 in 2001. The case fatality was 7.3%. The completeness of the mandatory reporting system reached a peak in 2004 at 84.4%. The combined completeness of the MBDS and the mandatory reporting system was above 85% and timeliness of reporting was 2 days. The acceptability of the system was high since 75% of all variables were complete in 97% of the questionnaires. Conclusion: We highlight the importance of evaluation of the ESS, based on its results. nMM due to S. pneumoniae represent an important group of diseases and their case fatality is high. The completeness of the ESS in Saragossa was over 80% when the mandatory reporting system and the MBDS were combined. Incorporating the MBDS into surveillance would facilitate the estimation of the incidence of various diseases subject to mandatory reporting.

Keywords : Epidemiological surveillance; Bacterial meningitis; Capture-recapture.

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